/* crypto/rand/rand.h */

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

 * All rights reserved.

 *

 * This package is an SSL implementation written

 * by Eric Young (eay@cryptsoft.com).

 * The implementation was written so as to conform with Netscapes SSL.

 * 

 * This library is free for commercial and non-commercial use as long as

 * the following conditions are aheared to.  The following conditions

 * apply to all code found in this distribution, be it the RC4, RSA,

 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

 * included with this distribution is covered by the same copyright terms

 * except that the holder is Tim Hudson (tjh@cryptsoft.com).

 * 

 * Copyright remains Eric Young's, and as such any Copyright notices in

 * the code are not to be removed.

 * If this package is used in a product, Eric Young should be given attribution

 * as the author of the parts of the library used.

 * This can be in the form of a textual message at program startup or

 * in documentation (online or textual) provided with the package.

 * 

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *    "This product includes cryptographic software written by

 *     Eric Young (eay@cryptsoft.com)"

 *    The word 'cryptographic' can be left out if the rouines from the library

 *    being used are not cryptographic related :-).

 * 4. If you include any Windows specific code (or a derivative thereof) from 

 *    the apps directory (application code) you must include an acknowledgement:

 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

 * 

 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 * 

 * The licence and distribution terms for any publically available version or

 * derivative of this code cannot be changed.  i.e. this code cannot simply be

 * copied and put under another distribution licence

 * [including the GNU Public Licence.]

 */

#ifndef HEADER_RAND_H

#define HEADER_RAND_H

#include <stdlib.h>

#include <openssl/ossl_typ.h>

#include <openssl/e_os2.h>

#if defined(OPENSSL_SYS_WINDOWS)

#include <windows.h>

#endif

#ifdef  __cplusplus

extern "C" {

#endif

typedef struct rand_meth_st

	{

	void (*seed)(const void *buf, int num);

	int (*bytes)(unsigned char *buf, int num);

	void (*cleanup)(void);

	void (*add)(const void *buf, int num, double entropy);

	int (*pseudorand)(unsigned char *buf, int num);

	int (*status)(void);

	} RAND_METHOD;

#ifdef BN_DEBUG

extern int rand_predictable;

#endif

int RAND_set_rand_method(const RAND_METHOD *meth);

const RAND_METHOD *RAND_get_rand_method(void);

#ifndef OPENSSL_NO_ENGINE

int RAND_set_rand_engine(ENGINE *engine);

#endif

RAND_METHOD *RAND_SSLeay(void);

void RAND_cleanup(void );

int  RAND_bytes(unsigned char *buf,int num);

int  RAND_pseudo_bytes(unsigned char *buf,int num);

void RAND_seed(const void *buf,int num);

void RAND_add(const void *buf,int num,double entropy);

int  RAND_load_file(const char *file,long max_bytes);

int  RAND_write_file(const char *file);

const char *RAND_file_name(char *file,size_t num);

int RAND_status(void);

int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes);

int RAND_egd(const char *path);

int RAND_egd_bytes(const char *path,int bytes);

int RAND_poll(void);

#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)

void RAND_screen(void);

int RAND_event(UINT, WPARAM, LPARAM);

#endif

/* BEGIN ERROR CODES */

/* The following lines are auto generated by the script mkerr.pl. Any changes

 * made after this point may be overwritten when the script is next run.

 */

void ERR_load_RAND_strings(void);

/* Error codes for the RAND functions. */

/* Function codes. */

#define RAND_F_RAND_GET_RAND_METHOD			 101

#define RAND_F_SSLEAY_RAND_BYTES			 100

/* Reason codes. */

#define RAND_R_PRNG_NOT_SEEDED				 100

#ifdef  __cplusplus

}

#endif

#endif